Warren s



(No Model.)

W. S. BLAUVELT. TROLLEY FOR ELECTRIC RAILWAYS.

Patented June 3, 1890 mi. NORRIS PETERS 20., fHOYHITMl-Z, WASHINGYON. a. c.

UNITED STATES PATENT OFFICE.

WARREN S. BLAUVELT,'OF ASBURY PARK, NEW JERSEY, ASSIGNOR TO THE SEA-SHORE ELECTRIC RAILWAY COMPANY, OF SAME PLACE.

TROLLEY FOR ELECTRIC RAlLWAYSf SPECIFICATION forming part of Letters Patent No. 429,413, dated June 3, 1890. Application filed October 9, 1889. Serial No. 326,478. (No model.)

To all whom it may concern:

Be it known that I, WARREN S. BLAU- VELT, of Asbury Park, in the county of Monmouth and State of New Jersey, have invented an Improvement in Trolleys for Electric Railways, of which the following is a specifioa tion.

practice it is difficult to maintain the elevated conductors in the same horizontal plane, or perfectly parallel to each other. In my improvement there are two pairs of grooved .wheels upon hanging arms that are pivoted to a two-part hinged body, with springs to open or spread apart the side pieces and cause the trolley to remain in its proper position upon the conductors, regardless of the variations in the distance between one conductor and the other, and the arms are made to prevent the conductor slipping in between the arm and the wheel, and such arms are pivoted to the side pieces and swing longitudinally, and hence the pairs of Wheels can rise or fall and accommodate the relative level of the conductors.

In the drawings, Figure 1 is an elevation of the trolley upon the conductors. Fig. 2 is a section of the conductors and end view of the trolley, and Fig. 3 is a plan view of the trolley and conductors.

The conductors a b are of any desired character, and they are supported overhead and parallel with the track in any suitable manher. The wheels 0 c d d are in pairs con-- nected by the horizontal links e c, and each wheel is deeply grooved around its periphery, so as to be adapted to run upon the conductor, and the axes f of such wheels form also the pivots connecting the arms h h k 70 to the respective links 6 6. Each arm is preferably made witha boss at the upper end for the axis to be screwed into and be secured by a cross-pin, and the arm below the lower edge of the wheel is inclined and made with a shoulder 4, that projects beyond the edge of the wheel, so that in case the trolley jumps c on the conductor, such conductor will be prevented from passing in between the wheel and the arm.

The pairs of arms are united, respectively, to the side pieces m n by the pivot-bolts 0, upon which they are free to swing, and the side pieces are hinged together at P to form the body of the trolley, and there are suitable springs that tend to swing the side pieces away from each other, and thereby spread the pairs of pulleys and links and adapt them to the various or varying widths between the two conductors. These springs are shown at q. There is also a strip or piece of rubber q (shown in Figs. 1 and 2 only) on the inner face of one of the side pieces, for the purpose of preventing the side pieces coming together violently, and also to insulate the pivot-bolts on the one side from those on the other. The side pieces are of insulating material, or the arms carefully insulated, so that the electric current cannot pass through the body of the trolley, but is led to the car through suitable covered wires 3, fastened to the lower ends of the respective arms.

It will now be apparent that the trolley adapts itself to the different widths between the overhead conductors, and if one conductor is higher than the other the pair of wheels will swlngfreely down upon the lower one by the arms assuming a more nearlyhorizontal position, or the other pair of arms may assume a more nearly vertical position to accommodate the higher conduct-or.

I claim as my invention 1. The two pairs of trolley-wheels, the links, and the axes on which the wheels revolve, in combination with the arms carrying such axes, the side pieces on which the arms are pivoted, and the hinges connecting the side pieces together to form the body of the trolley, substantially as set forth.

2. The body of the trolley formed of two side pieces hinged together, in combination with a spring to swing the side pieces on the hinge, arms pivoted to the side pieces, and

Signed by me this 5th day of September, 10 89.

WARREN s. BLAUVELT.

Witnesses:

ISAAC G. KENNEDY, STEPHEN G. THOMAS. 

